//
//  MyViewController.m
//  HelloWorld
//
//  Created by Haili Ma on 9/20/09.
//  Copyright 2009 __MyCompanyName__. All rights reserved.
//

#import "MyViewController.h"


@implementation MyViewController

@synthesize textField;
@synthesize label;
@synthesize string;

- (IBAction) changeGreeting: (id) sender {
	
	self.string = textField.text;
	
	NSString *nameString = string;
	
	if ([nameString length] == 0) {
		nameString = @"World";
	}
	
	NSString *greeting = [[NSString alloc] initWithFormat:@"Hello, %@!", nameString];
	
	label.text = greeting;
	[greeting release];	
}

/*
 // The designated initializer.  Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
    if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
        // Custom initialization
    }
    return self;
}
*/

/*
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
    [super viewDidLoad];
}
*/

/*
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    // Return YES for supported orientations
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
*/

- (void)didReceiveMemoryWarning {
	// Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];
	
	// Release any cached data, images, etc that aren't in use.
}

- (void)viewDidUnload {
	// Release any retained subviews of the main view.
	// e.g. self.myOutlet = nil;
}

- (BOOL) textFieldShouldReturn: (UITextField *) theTextField {
	
	if (theTextField == textField) {
		[textField resignFirstResponder];
	}
	
	return YES;
}

- (void)dealloc {
	[textField release];
	[label release];
	[string release];
    [super dealloc];
}

@end
